As luck would have it, I recently reviewed some old text on the subject of carb ice. It refered to the once common use of a MAP gauge to detect carb ice, ie., full throttle and lower than usual MAP for the variables indicates an induction restriction (carb ice, or iced filter). Some Cessna 140's came equipped with a MAP gauge, so those pilots can also use it to some extent to set mixture and power with reference to RPM. I have an old MAP gauge, and I'm considering installing it for a little experimentation and documentation. Anyone know where to tap into a C-90 or O-200 induction system for this purpose?
